Preparing Concrete Floor For Tile

Let the primer dry and then apply the membrane photos 3 and 4.

Preparing concrete floor for tile. If there are cracks larger than 1 8 inch in your concrete subfloor those should be patched and filled with a cement. Never lay tile over a damaged concrete floor without repairing it or your tiles may crack or lift. Installing tile directly on concrete.

A concrete sealer prevents moisture from staying underneath the ceramic tiles. Cracks and depressions may create weak spots that cause tile to crack in the future. Sweep the floor for dust and debris.

Use a long level and tape measure to check that the floor is level. Use a broom to sweep any debris from the floor. With the cracks patched apply a latex modified crack resistant thin set.

Patch little cracks or holes with a cement patching compound. Typically the floor must be level and uniform within 3 16 inch every 10 feet. How to prepare concrete floor for ceramic tile method 1 of 4.

Cut the membrane so it s 1 1 2 times the width of your tiles. Use a trowel to apply and use the edge to ensure the patch has edges level with the surrounding concrete. Wear rubber gloves and safety glasses.

Concrete subfloors move shift and crack over time. Ceramic and porcelain tile are so frequently installed at or above grade level on a cement board underlayment or directly on plywood that it almost seems novel to install tile directly on concrete. It will also provide a stronger adhesion between mortar and concrete.